Striking mechanism for type-writers.



P. J. DREHER STRIKING MECHANISM FOR TYPE WRITERS.

APPLICATION FILED JULY 17,1911.

1,643,410, a Patented N0v..5,1912.

2 SHEBTSSHEET 1.

1 J DREHER. s'ranmsmr MECHANISM FOR TYPE wmms,

Patnted N017. 5,1912.

2 sums-sums v APPLICATION FILED JULY 17, 1911.

W! TNES'SEEZ [MEN TUE.

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PHILLIP JACOB noaaiio,

Application filed. July 3 To all whom it may concern:

Be it known that It, Pinion? Jason 'a 'esident of Toledo, in the bounty of Lucas and State of Ohio, have invented a certain new and useful Striking, Mechanism for Type-Writers; and I doheiceby declare the following to be a 1111, clear, enaot description of the invention, such as Wil able others skilled in the art to Wh appertains to make and'use the same, rezt'env ence oeingvhad to the accompanying d1'aW- ings, and to the figures of reference marked thereomwhich form a pa'rtof this specifics tion. t v My invention relates to automatic Writers of the pneumatically operated. t ype, and has particular reference to the striking means thereof, but is not restricted to such 1 use as it may be employed in any connection for which it may be adapted or appropriate The ob ect. of my invention is "the promsion of a key and spaoet-Phei sti'iliing neehanism of this class, Which is simple and efii clent 111 its construction, and adapted to op,

erate a typewriter to accurately s orodnce any number of letters, circulars or other matter from a perforated letter sheet, and which 181 3180 operable to reproduce the body of a letter or the like any desired 111132 be-r'of times with adifferent address on each reproduction; orlit may be used an addressing machine for addressing envelope, Wrappers for papers, or the like.

A further object of my invention is the provision of simple and improved pneu matically operablemeans for returning the platen carnage to its line start ng position upon the completion of the Writing oft a line.

The invention is fully vdescribed in the following specification, and While, in its broadeiaspect, it is capable of embodiment in numerous forms, a preferred'embodiment thereof is illustrated in the accompanying I drawings, in whieln- Figure 1 is alongitudinal Vertical section through a-mechanlsm embodying the invention mounted Within a desk and in association with a typewriter. Fig. 2 is a top plan view-thereof with the desk top removed and parts broken away, and Fig; 3 is an enlarged elevation of the key strikingpart of a striking lever. I

Referring to the drawings, 1- designates an end portion of an ordinary typewritten desk, but may comprise. any other suitable sttniniiio ivtiionianzisio losui'e and support or described, and 2 designates a ty Writer which is mounted on a platform lowered top portionS of the desle The mechanism coin i ising' "the features of my present invention is located inyone 4 4 parts no ei'idless belt ty x [and 2', l'ESjQSCliVBiIY. The sheet nwardly between twoleoaeting; idler i3 locate-ti beneath e .tmclten ice loops around the 1 :1 board being held in loo;

mewith by the idler soils 9 and I 0:: oessbeti een an idler-roll '13. and feed roll 12 after which it passes downwardly to the irolls 8 and 9; The feeding iiXDFIEZRGDiT oi the-sheet is resisted by the notion of a s gn n finger 13 upon the roll 8, thus tel ling to draw the belttaut across the met hpieee of the tracker-board, as is apparen The course of movement of the belti'i' is similar to that of jthe belt 6, in that passesbets eeii ti'volidlet rolls 14, 1% themes around t e' nofih pieee of the tracker-hosed sndtheidler roll located above the some and, tween ooactihgiiflei and feed rolls l6 and 11 respectively, "l he feed rolls l2 and 16 carry gears respectively a an end OItlOIl theses-fond rotation is comlnuni l diate driy'e gear 20 in mesh theredr ve gear being carried by Whieh ismoonted in suitable beanoh intern e use only one of, the .e driven at the same 18 and it? is loosely 1, and clutch parts 23 shafts 'th with and. adapted to be moved into or oiit of olnteh engagement with the associated ears, as is apparent. Ihe-eluteh end portion of the desk and eonipitises in enee upwardly he- 'eated in the same -fi tion to such gears by n a side wttion of the or 'ieathered upon tie respect-ive shown in Fig. 2.

7 of the lever 24 are automatically controlled by the action thereon of a pair of bellows 26 and 27 the movable parts of which bellows have engagement with-the lever at opposite sides of its fulcrum, as shown in Fig. 2.

tube 28 leads in the present instance from theassociated end portion of the trackerstance by a belt board 5 to the bellows 26 and a tube 29 leads from the tracker-board 4 to the bellows 27, whereby air may be admitted to said bellows upon a registering of perforations in the belts 6 and 7 with the respective inlet openings of tubes '28 and 29, as is apparent. The exhaust from the bellows 26- and 27 is through a pipe 30 having branches leading to each of said bellows, said pipe having communication through a pipe 31 with a suitable suctionpump 31', which is driven by any suitablemeans.

The gear 20 is driven in the present in- 32 passing over a grooved pulley 33 on a side thereof, said belt being connected to amotor (not shown) or to any suitable source of power supply. The striking movements of the typewriter keys 34 and spacer-bar 35 are actuated bythe striking lever 36, one of which is provided for ewri'ter, and the spacerbar 35, and also or the shift keys of the typewriter should it .be-of the shiftable'carriage type. The striking levers 36 are ar-.

' ranged in sets one above the other, being fulcrumed adjacent their inner ends to fulcrum rods 37, which extend across the desk or case 1 interiorly thereof in suitable posi- The key striking lehetdraised in normal their inner ends of tions for such purpose. vers 36 are yieldingly position by the action on springs 38, and the-raising movements of the striking ends of the levers are limited by the coaction of. their inner ends with stop-screws 39. which thread through cross pleces 40 arranged within the case 1. Said cross members 40 also serve to receive the thrusts of i the associated springs 38 in opposition to the levers. c

' For the purpose of cushioning the strik-. ing action of the writer keys and spacer-bar each lever is provided at the striking end thereof with a stem 41, which preferably threads through the lever for the purpose of adjustment and carries a. plunger head. 42 at its lower end,

which head has a coiled compression spring- 43 disposed between two spaced parts thereof, as indicated. Thelower or striking surface of the head 42 is faced with a soft substance 44, such as felt or the like. This form of striking lever causes the keys to levers 36 .upon the type-f have a yielding action when the type arms strike the platen and avoids the dead action which would otherwise-be present, thereby not only prolonging the life of the striking parts but causing a, striking action similar to that which is caused by the fingers of'a'n v operator; I

he striking movementsof the levers36 are actuated by thecollapsing or closing movements of bellows 45,0ne of such bel- A- lows being attached to each of the leversh g.

connecting rods-.46, each of which rods prefe'rably passes freely downwardthrough the assoclated lever-36 intermediate its fulcrum .anc striking end and has itslower end pass-.

ing through an aperture in the tongue 47- pro ecting from the collapsing portion of the associated bellows. The rods 46 are headed above the levers and. below the- .tongues 47. T lie-bellows 45 are mounted in rows oneabove the other andsupported by front and rear cross pieces 43 2\nd. 49 re.- spectively, the rear piece 49 being hollowed out. as at'50, to-serve as portions of the-air suction conduit withwhich the pipe 31 connects, communication beingzestablished between the suction opening (ff each bellows and the pipe 31 through the passages 40in saidrearcro'ss pieces.

I A branched tube 51 leads from passages in the tracker-boards 4 and 5 to each of the bellows 45 whereby each bellows may be operated upon the registering of a perforation in either perforated sheet 6, 7 with the associated passage in the respective tracker? board 4,' 5. It is thus apparent that any printed matter which is represented on the belts 6 and? by perforations maybe reprodu'ced upon a sheet within the typewriter as each tracker-board has communication with the bellows of the several typewriter keys and spacer bar striking members.

If the driving parts for the perforated sheets'6 and 7 are to be run by electricity a knife switch 52 is provided, the lever of which is fulcrumed within the case and has its free end projecting without the same to permit a manual movement thereof to close the circuit. The opening movements of the switch lever 53 are automaticallyactuated by the collapsing movementof a bellows 54 which is secured to the case-adjacent to said lever and has its movable part connected to the lever, as shown at 55, whereby a collapsing movement of said part will effect an opening bellows 54 preferably has communication through-a tube 50 with a. passage in the tracker-board 5 whereby the opening move-- ments'of the switch will be controlled by a perforation or perforations in the sheet 7 movement of the switch lever. The

movin into re ister with the associated passage in the tracker-board 5 to open com munication between the atmosphere andthe bellows 54. The suction of .airfrom I lit), and has its upper long arm working up 7 wardly through a transversely extending communication between each of the trackermovement. 'lfhe pipe 531 communicates with letter while the sheet 7 is penliorated for the for the first address move by 'tlietra'cken i 3% and spacer bar as the riting of the bellows is through a branch pipe 57 lead- I ing; from the pipe 30.

Fer the purpose of retracting the carriage at the completion of the writing of a line, i i ride a lever 58 which is inlcrumed below the desk part 3 to a cross-bar 59, as at slot 61 in the part 3 and terminating in a finger which bears against the outer: end of the end roll which is located at the-left. hand end of the typewriter platenbS; The lower short arnifof the lever 58 is attached to the movable part or a bellows 6% insuchmanner that a collapsing movement of the beliows will draw thelower end of the lever to the left and move the upper end portion thereof to the right to efiect a retraction of the carriage to the limit of its right hand the "snot-ion end of the bellows 64 throiigh a branch 65, whii ,aahran'ch tube 65 opens boards and 5 and said'bell'ows.

The purpose of the two tracker-boards 4 and is to enable the use of onebelt for the printing of the body or a circular letter andthe use of the other belt for the printing of the addresses on the letters as they aresuc cessivel'v written. in the present instance the sheet 6 'is perforated for the body of the addresses oi? the persons to whom the letters or other matter are. to be sent. i

in the operation of the invention the perforated sheets 6 and 7 with the proper perforations thereon are placed in engagement with their respective guiding and feed rolls and theswitch 53 is then closed tocii'ect a driving of the gear 20 and feed rolls l2 and 17. .Upon a starting of the mechanism the clutch part is in engagemei'it with the gear 19 and efiects a driving of the feed roll 17. As the perforations upon the sheet 7 board 5, a suction-is created through the proper bellows to ctlectcollapsing movements thereof and to impart consequent key striking movements to the typewriter keys ddress may require. Upon the completion of the writing of each line of an address a perforation in the sheet 7 cooperates with the tracker-board 5 and tube 66 to permit'a suc'ton through the bellows 6-1 whereby to more the lever to retract the platen 63 and associated carriage (not shown). lVhen the writing of an address is completed a perforation in the sheet 7 permits a suction throngh the bellows/26 from the tracker board thus eliiecting a collapsing of said bellows. to shift the clutch lever Q-L to release the clutch part from its gear and to engage the clutch part 223 'ith its gear whereby'to drive the sheet 6 and allow the ing" of the carriage for eachline being effected as above described. As the typewriter shown in the present instance is of the Oliver type no means is required to move the platen to shift the paper for the line spacing is-such spacing is automatically accomplished upon the Oliver machine by the retracting movement of the carriage. When 5 the writing of thebod'y. ot a letter has been completed perforations in the sheet 6006;

erate with a passagein the tracker-boardi and some of the tubes 70 to admit air to" bellows (not shown) for controlling the sheet feeding mechanism which comprises another part of my invention and-1s :de-

scribed and claimed in a separate aq )plication. When a written letter sheet has been fed from the typewriter and a fresh letter sheet fed thereto, a: perforation'inthe perforated sheet ,6 cooperates with'a passage in the tracker-board 4 and the tube 29 to permit a suction through the bellows 27- whereby to shift the clutch parts to release the roll 12 from and connect the roll 17 with the drivegea-r 20. This being done the ad-- dress sheet 7 is moved to cooperate with the associatedparts to effect a writingof a new address as above described after which the letter body sheet is thrown into operation ,to write the body of the letter. I will be apparenttliat this operation is repe ted for as many addresses asthere are on the address sheet 7. Afterthe writing ofthe let- 'ter for the last address on the address sheet,

the address sheet is thrown into operation and moved to place a perforation thereoninto register with the tube 56 "leading to' the switch bellows 54 whereby to effect a collapsing of such bellows and a consequent opening movement of the switch lever 513.

:ihe pipe 67 leads from-the letter sheet feedw mg mechanism comprising the siibject mat- 'ter of a copending li ti 681.: p

designates a bellows for controlling the -movements of a valve 69 therein.

It is evident that I have provided an efficient pneumatically operated mechanism 3 for cont-rolling the writing of circular let tors or the like having'difierent addresses, and also that it is not necessary to use the addressing sheet 7 and letter body sheet 6 with the associated part-s in conjunction as either can be used alone if desired.

. I wish it understood that my invention is not limited to any specific construction or arrangementof the parts, except in so far as such limitations are specified in the claims.

Havingthus described my invention, what I claim as new and desire to secure by Letters Patent, is,

1. The combination with a typewriter, of pneumatically operated'key striking mechanism therefor, a controlsheet for such mechanism, electric driving means'for said sheet, an electric switch'in circuit with said mt ans, and means automatically operable to open said switch at a predetermined/point in a movement of said sheet.

2. The combination with a typewriter,- of pneumatically operated mechanism r or selectively striking the keys and spacer-bar thereof, a perforated address sheet coacting with a part of said. mechanism to control the action of the same for the Writing of addresses .ndic'at-ed by perforations on said sheet, an electric'switch for controlling the driving arts. and means automatically op- 20 erable to "open said switch at a predetermined point ina movement of the address sheet past the coacting part of said mecha-- nism. v

3. .The c )mbination with a typewriter, of a key strikfng lever, a stem projecting from a drive roll for each control sheet, a gear.

loosely carried by each drive roll, a clutch associated with each gear for connecting or disconnecting it relative -to its drive 'roll,

a drive gear in mesh with both of said loose gears, means for driving said drive gear, and pneumatically operated mechamsm for simultaneously mov ng the clutches to cause them to alternately engage and release the respective gears. v

In testimony whereof, I have hereunto signed'my name to this specification 1n the presence of two subscribing witnesses.

PHILLIP JACOB DREHER: Witnesses 'C. W. OWEN,

M. L, OPPENHEIM. 

